Accession Number : ADA188202

Title :   Preparation and Characterization of Co(II)/ZrO2 Solid Solution.

Descriptive Note : Technical rept.,

Corporate Author : BROWN UNIV PROVIDENCE RI DEPT OF CHEMISTRY

Personal Author(s) : Wu, Ping ; Kershaw, Robert ; Dwight, Kirby ; Wold, Aaron

PDF Url : ADA188202

Report Date : 27 Oct 1987

Pagination or Media Count : 10

Abstract : Samples of cubic zirconium oxide containing up to almost 10 atomic percent cobalt were prepared by codecomposition of the nitrate. Magnetic susceptibility measurements confirmed the limit of solubility and the presence of the cobalt as Co(II). The reduction of the cobalt inserted in cubic zirconia took place at a considerably higher temperature than bulk cobalt oxide. Cubic Zro2 samples containing some transition metal oxides including rhodium oxide (1), iron oxide (2), chromium oxide (3) and nickel oxide (4) were studied previously in this laboratory. Their structures, magnetic properties and the stabilities towards reduction have been studied. Zro2 is characteristic of an absence of reaction between the ZrO2 support and the catalyst. It is the purpose of this work to investigate the formation of solid solution between ZrO2 and cobalt oxide and to study the magnetic properties of such a system. In addition, the stability towards reduction of cubic Zro2 samples containing various concentrations of reacted cobalt oxide will be determined.

Descriptors :   *COBALT, *OXIDES, *SOLID SOLUTIONS, *ZIRCONIUM COMPOUNDS, CATALYSTS, CHROMIUM COMPOUNDS, IRON, MAGNETIC PROPERTIES, MEASUREMENT, NICKEL COMPOUNDS, OXIDES, REDUCTION, RHODIUM, SOLUBILITY, STABILITY, TEMPERATURE, TRANSITION METAL COMPOUNDS

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE